单项选择题

The capital intended to broaden the export base and ___________ efficiency gains from international trade was channeled instead into uneconomic import substitution.

A．secure
B．extend
C．defend
D．possess
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单项选择题
Unless you sign a contract with the insurance company for your goods, you are not entitled ___________a repayment for the goods damaged in delivery.
A．to
B．with
C．for
D．on
单项选择题
The roles expected ___________ old people in such a setting give too few psychological satisfactions for normal happiness.
A．of
B．on
C．to
D．with
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